Zerg Aqualisk

The zerg aqualisk. An idea I got on Blizzforums's starcraft 2 section; water unit designs. Whereas one member got theidea of an octopuslike Zerg unit. I got the idea of the looks at once and decided to draw it. This is the outcome.
Here is its stats:
Name: Aqualisk
Cost: 250 min, 75 gas, 60 time.
Supply: 3
Size: Large
Armor: 2
Attack: 1 (+1 each upgrade) (little, no, not with its cooldown rate)
Attack type: Normal
Cooldown: 2
Built at: Hydrohatch
Targets: Water
Range: 1
Sight: 8
Speed: About the speed of a marine?
Notes: Biological

It uses those large spikes on the arms to grab a large ship to then smash it with its 4 spiked tentacles (which you cant see in this image) The other 6 of the tentacles it uses to swim (here you see at least 3).
Or we could go for the option that it grabs the thing it attacks with its tentacles (then all are those swimmer tentacle thingies) and just attack with its large claws, the it would pretty much make it an underwater ultralisk with the ability to keep the enemy in control by immobilizing it with the tentacles.
Think it was small sized units it just lasted of with its tentacles.
Medium sized it grabbed them, making the unit immobile.
While lrge units it grabbed them, but the unit could move.